Note 5 - Derivative Instruments (Details) - Offsetting of Derivative Instruments (USD $) In Thousands, unless otherwise specified	Nov. 30, 2013		Aug. 31, 2013
Offsetting of Derivative Instruments [Abstract]
Gross Derivative Amount	$ 443		$ 131
Gross Derivative Amounts Offset In Balance Sheet	0		0
Net Amount	443	[1]	131
Gross Derivative Amount	(3,657)		(7,871)
Gross Derivative Amounts Offset In Balance Sheet	101		0
Net Amount	(3,556)		(7,871)
Gross Derivative Amount	(3,214)		(7,740)
Gross Derivative Amounts Offset In Balance Sheet	101		0
Net Amount	$ (3,113)		$ (7,740)

[1] The Company utilizes the income approach to measure fair value for its derivative instruments (foreign exchange forward contracts). The income approach uses pricing models that rely on market observable inputs such as spot, forward and interest rates, as well as credit default swap spreads and therefore are classified as Level 2.